已知现存的头足类动物约500种左右.我国沿海据初步调查有60多种,其中有些种类如乌贼等的数量很大.因头足类,肉味鲜美、营养丰富,是人们喜爱的食品,具有很大的经济价值.更重要的是头足类中大多数种类的神经纤维粗,是神经生理学领域中较典型的实验动物.自1940年开始使用枪乌贼做为实验动物以来,使神经生理学得到迅速发 There are about 600 species of cephalopods known to exist, and there are more than 60 kinds of coastal censuses in China, some of them are quite large, such as squid, etc. Because of the cephalopods, delicious meat and rich nutrition, it is a favorite of people Food, with great economic value.More importantly, the majority of the types of nerve fibers in the cephalopods, is the more typical experimental animals in the field of neurophysiology.From the beginning of the use of calamata as experimental animals in 1940, Neurophysiology gets faster